Earliest and Latest Snowfalls in Sioux Lookout History

This is a list of the earliest and latest times in the year when snow was recorded in Sioux Lookout, Ontario. It is based on NOAA data from the years 1914–2024.

What's the Earliest it has Snowed in Sioux Lookout?

The earliest in the season it has snowed in Sioux Lookout, Ontario is September 4 which happened in 1991.

What's the Latest it has Snowed in Sioux Lookout?

The latest in the season it has snowed in Sioux Lookout, Ontario is June 8 which happened in 1978.

Earliest Snowfalls

Date	Year	Snowfall
September 4	1991	0.6 cm
September 9	1918	6.4 cm
September 12	1975	1.0 cm
September 13	1993	2.4 cm
September 13	1949	0.5 cm
September 14	2011	1.0 cm
September 14	2007	0.6 cm
September 14	1956	0.3 cm
September 14	1949	1.5 cm
September 14	1916	3.8 cm
September 17	1918	2.0 cm
September 18	1991	1.0 cm
September 18	1918	2.5 cm
September 19	1980	5.6 cm
September 19	1918	3.8 cm
September 20	2000	6.2 cm
September 21	1983	0.4 cm
September 21	1972	0.3 cm
September 21	1971	0.5 cm
September 21	1947	0.3 cm

Latest Snowfalls

Date	Year	Snowfall
June 8	1978	4.5 cm
June 2	1969	7.4 cm
June 1	1969	2.0 cm
May 31	1964	2.8 cm
May 29	2012	0.6 cm
May 29	1954	0.3 cm
May 28	1965	0.5 cm
May 28	1954	5.1 cm
May 27	1965	4.1 cm
May 26	2008	1.4 cm
May 26	1970	0.8 cm
May 26	1947	1.0 cm
May 25	1970	4.3 cm
May 24	1983	0.7 cm
May 24	1971	1.5 cm
May 23	2002	2.2 cm
May 23	1992	0.2 cm
May 23	1959	0.8 cm
May 23	1949	0.5 cm
May 21	1987	1.0 cm
May 21	1963	1.5 cm
May 21	1959	1.5 cm